package net.zjitc.reggiebymeme.service.Impl;

import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import net.zjitc.reggiebymeme.common.CustomException;
import net.zjitc.reggiebymeme.entity.Category;
import net.zjitc.reggiebymeme.entity.Dish;
import net.zjitc.reggiebymeme.entity.Setmeal;
import net.zjitc.reggiebymeme.mapper.CategoryMapper;
import net.zjitc.reggiebymeme.service.CategoryService;
import net.zjitc.reggiebymeme.service.DishService;
import net.zjitc.reggiebymeme.service.SetmealService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

@Service
public class CategoryServiceImpl extends ServiceImpl<CategoryMapper, Category> implements CategoryService {
    @Autowired
    private SetmealService setmealService;
    @Autowired
    private DishService dishService;
    @Override
    public void remove(Long id) {
//添加查询条件，根据分类id进⾏查询菜品数据
        LambdaQueryWrapper<Dish> dishLambdaQueryWrapper = new LambdaQueryWrapper<>();
        dishLambdaQueryWrapper.eq(Dish::getCategoryId,id);
        int count1 = dishService.count(dishLambdaQueryWrapper);
//如果已经关联，抛出⼀个业务异常
        if(count1 > 0){
            throw new CustomException("当前分类下关联了菜品，不能删除");//已经关联菜品，抛出⼀个业务异常
        }
//查询当前分类是否关联了套餐，如果已经关联，抛出⼀个业务异常
        LambdaQueryWrapper<Setmeal> setmealLambdaQueryWrapper = new LambdaQueryWrapper<>();
        setmealLambdaQueryWrapper.eq(Setmeal::getCategoryId,id);
        int count2 = setmealService.count(setmealLambdaQueryWrapper);
        if(count2 > 0){
            throw new CustomException("当前分类下关联了套餐，不能删除");//已经关联套餐，抛出⼀个业务异常
        }
//正常删除分类
        super.removeById(id);
    }
}
